I just had the chance to try out one of Big and J’s new Block’s. The block is intended to last longer than a bag. It is geared towards the person that might not be able to get to their farm every week to put out their supplement/attractant. I have a very high density of deer on the farm I put my block out on and it was gone after about 8 days. A 40 pound bag would last no longer than 2 days here. I am very pleased to see the deer not only love it but also to see how long it lasted!